Surveillance detector

Details Surveillance detector Surveillance detector

2007-09-04

2007-09-04

Lee, Benjamin C. (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S552000, C340S555000, C340S556000, C340S561000, C340S545300

Reexamination Certificate

active

10490891

ABSTRACT:
A surveillance detector comprising a light emitter and a light guide which is optically connected to the light emitter, which light guide includes reflectors mounted therein, a special feature being the fact that the light guide is capable of converting the light from the light emitter at least in part into a light beam to be built up in the space to be kept under surveillance, and in that the light guide is capable of guiding light from the light beam that is reflected by an object in the space to be kept under surveillance to a light receiver of the detector, which is optically coupled to the light guide.

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patent: 6529129 (2003-03-01), Tomooka
patent: 0 817 148 (1998-01-01), None
patent: 1 126 430 (2001-08-01), None
International Search Report for PCT/NL02/00625 dated Dec. 12, 2002.

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